iPhone users will also enjoy several more additions, including the ability to email, copy and tweet a link (via the "share" option) within a tweet. (Visit the Twitter Blog to see what other options iDevice users will now have access to.) You can download the iOS app right now at Apple's App Store.

Twitter's Android app will now be optimized for Ice Cream Sandwich-powered devices and for the "forked" Android OS tailor-made for Amazon's Kindle Fire. Both versions of Twitter's Android app are available for download at the Android Market and the Amazon app store. A version of the app for Nook Tablet and Nook Color will be available on February 23 though the Barnes & Noble NOOK Store, according to the Twitter Blog.